Original Research Paper
Dynamic Analysis of Fractures in North of Torud – Moalleman Area (Central Iran, East South of Damghan)

A. Keynezhad; M. Pourkermani; M. Arian; A. Saeedi; M. Lotfi

Volume 20, Issue 78 , December 2011, Pages 3-16


  Detailed geological and structural analysis of north of Torud-Moalleman area (Central Iran), between Anjilu fault in north and Torud fault in the south, led to tectonic elements of this limit such as fractures and relative of their mechanism with left lateral sheared zone of two main faults. This study ...  Read More

Original Research Paper
Multi Disciplinary Approach for Seismic Microzonation of Bam City

S. Hashemi Tabatabaei; A. Mohamadi; A. S. Salamat

Volume 20, Issue 78 , December 2011, Pages 17-26


  Earthquake struck Bam city on 12/26/2004. Seismic microzonation of Bam city started with the aim to determine engineering geological and geotechnical characteristic in order to reduce the future earthquake disasters. The seismic microzonation included geoelectric, geoseismic, geotechnic, seismotechtonic, ...  Read More

Original Research Paper
Palaeobathymetry of the Ziarat-Kola Section at the Upper Maastrichtian, Central Alborz, through Planktonic and Benthic Foraminifera

M. Asgharian Rostami; E. Ghasemi-Nejad; M. Shafiee Ardestani

Volume 20, Issue 78 , December 2011, Pages 27-34


  At this research are studied late cretaceous sediments at Ziarat-kola section, Central Alborz, in order to Palaeobathymetry and sea level change. These sediments are with about 200m thickness consist of monotonous Marl and limy marl. Based on Planktonic foraminifera gain Upper Maastrichtian stage (Abathomphalus ...  Read More

Original Research Paper
Folding History in Laibid Metamorphic Rocks, Sanandaj-Sirjan Zone

M. Aflaki1; M. Mohajjel

Volume 20, Issue 78 , December 2011, Pages 35-46


  Laibid (northwest Esfahan) metamorphic rocks are situated in complexly deformed sub zone of the Sanandaj-sirjan zone, in which bounding faults emplaced Permian metamorphosed, beside the younger Triassic-Jurassic metamorphic rocks. Structural study of these units reveals three deformation stages of a ...  Read More

Original Research Paper
Geotectonic Investigation of Early Paleozoic Magmatism inUrumieh- Dokhtar Zone (South of Kashan)

S. M. Tabatabaeimanesh; H. Safaei; A. S. Mirlohi

Volume 20, Issue 78 , December 2011, Pages 47-52


  In south of Kashan, early Paleozoic volcanic rocks are a part of Ghohrudmountains. In Iran structural- sedimentary division, these volcanic rocks located inUrumieh- Dokhtar zone. These volcanic rocks are basic to semibasic and mostly involved basalt. Geochemical investigations of these rocks show the ...  Read More

Original Research Paper
New Founds in Biostratigraphy of Ilam Formation at Kuhe Assaluyeh. (Zagros Province)

Kh. Khosrotehrani; D. Baghbani; F. Keshani; M. Omrani

Volume 20, Issue 78 , December 2011, Pages 53-60


  In order to study Biostratigraphy of Cenomanian – Late Campanian deposits (upper part of Sarvak Fm.,Ilam Fm. and lower part of Gurpi Fm.), kuhe Assaluyeh stratigraphic section selected. Sediments of this interval consist of limestone, argillaceous limestone and marl with thickness of 162 m. In ...  Read More

Original Research Paper
Structural Style of High Zagros Zone Based on Thrust Fault System in Southeast Kermanshah

R. Elyaszadeh; M. Mohajjel

Volume 20, Issue 78 , December 2011, Pages 61-68


  High Zagros zone in southeast Kermanshah is bordered between two Radiolarite and Zagros Fold Belt and consist of abundant NW-SE trending thrust faults and folds sub-parallel to Zagros fold belt. Several structural cross-sections were prepared in NE-SW direction perpendicular to the trend of the structures. ...  Read More

Original Research Paper
Petrogenesis of Southern Amlash Alkaline Rocks in the South Caspian Sea, North of Iran

F. Zaeimnia; A. Kananian; M. Salavaty

Volume 20, Issue 78 , December 2011, Pages 69-78


  South Amlash alkaline rocks, located in south of Caspian Sea, occur like small and discrete bodies within the Cretaceous igneous rock association which is a small part of Gorgan-Rasht tectonic zone. These rocks crop out as large-volume pillow lavas and homogeneous fine- to coarse- grained gabbros and ...  Read More

Original Research Paper
Petrogenesis of Plio-Quaternary Post-Collisional Potassic and Ultra-Potassic Rocks in Northwest Marand

G. Ahmadzadeh; A. Jahangiri; M. Mojtahedi; D. Lentz

Volume 20, Issue 78 , December 2011, Pages 79-86


  In this paper the study of Plio-Quaternary post-collisional magmatism in northwest of Iran and northwest of Marand is considered. The studied Potassic and ultrapotassic (UP) alkaline rocks were erupted at northern part of Urumieh-Dokhtar magmatic arc (UDMA). The studied rocks dispaly microlithic porphyritic ...  Read More

Original Research Paper
Analysis of Fractures in the Asmari Reservoir of Marun Oil Field (Zagros)

Mehran Arian; R. Mohammadian

Volume 20, Issue 78 , December 2011, Pages 87-96


  Marun oil field is situated on the eastern part of Dezful Embayment zone (Zagros).Aghajari Formation is cropping out on the surface. Asmari formation, Bangestan and Khami Groups are the Main reservoirs in this field. Asmari formation with six reservoirs layers is the most important reservoir. Dolomitic ...  Read More

Original Research Paper
Metalogenic Properties of Barik-Ab Pb-Zn (Cu) Ore Deposit with Acidic Tuff Host-Rock, west Central Alborz, Northwest of Iran

K. Bazargani-Guilani; M. Parchekani

Volume 20, Issue 78 , December 2011, Pages 97-104


  Barik-Ab Pb-Zn (Cu) ore deposit located in 2 km for front Barik-Ab village in north of Abhar town, south eastern of Zanjan province. According to the geological classification of Iran , this area located in Taroum mountains and is a part of west Alborz range , Alborz-Azarbaidjan zone or west of central ...  Read More

Original Research Paper
Investigation of the Stress Heterogeneities Using b-value in Reservoir Induced Seismicity in the Masjed Soleyman Dam Area (South West of Iran)

M. R. Ebrahimi; Mohammad Tatar

Volume 20, Issue 78 , December 2011, Pages 105-110


  Masjed Soleyman reservoir is located in Zagros Mountain of western Iran, which is one of the most seismically active zones of the Alpe-Hymalaya belt. So, it seems to be necessary to carry out widespread studies, especially on the impact of this reservoir with 177 m height and 261 million m3 capacity ...  Read More

Original Research Paper
Composition and Quality of Coals in the Lavij Coal Deposit,Central Alborz, Iran

P. Navi; M. Yazdi; R. Esmailpur; A. Khakzad

Volume 20, Issue 78 , December 2011, Pages 111-116


  Lavij coal deposit is situated at a distance of 48 km SW of Amol, in Central Alborz coalfield, North of Iran. Lavij coal-bearing strata in ‍‍‍Central Alborz zone are within the Upper Triassic– Lower Jurassic formation. The coal-bearing sediments in this area are called Shemshak Formation ...  Read More

Original Research Paper
Carboniferous Conodonts Biostratigraghy in Kiyasar Region and Introduction 7 Biozones Comparable to World Standard Conodont Zonation

A. Fallah; B. Hamdi; H. Mosaddegh

Volume 20, Issue 78 , December 2011, Pages 117-122


  The studied section (Kiyasar)is situated in Central Alborz,75 Km. southeast of Sari. The thickness of Carboniferous sequences (Mobarak Formation) is 385 meter and consists of thin-bedded limestone at the base and various thickness of limestone (mostly with medium thickness) with intercalations of shales ...  Read More

Original Research Paper
Hydrothermal Alteration Mapping Using ASTER Imagesin the Rabor Area, Kerman

M. Abbaszadeh; Ardeshir Hezarkhani

Volume 20, Issue 78 , December 2011, Pages 123-128


  Rabor area is located in 160 km south of Kerman city and 40 km east of Baft. There is some evidence illustrating some porphyry copper type mineralization, co-operated with tens of within Urumieh-Dokhtar volcanic belt stocks. Identification of the high potential localities and mapping the porphyry copper ...  Read More

Original Research Paper
Optimization of Cyanide Leaching Process in order to Increase Au, Ag and Hg Recovery in Pouya Zarkan Aghdareh Plant

M. Abdollahy; S. M. J. Koleini; A. Ghaffari

Volume 20, Issue 78 , December 2011, Pages 129-138


  Cyanidation process is one of the most important and widespread hydrometallurgical technologies used in the extraction of gold and silver from ores and concentrates. Some of the most effective parameters on cyanide leaching are sodium cyanide concentration, dissolved oxygen, solid percent, pH, particle ...  Read More

Original Research Paper
Evaluating the Origin of Magnetite and Sulfide Phasess from Gol-Gohar Iron Ore Deposit (Sirjan): Constrains from O and S Isotope Data

Y. Bayati Rad; H. Mirnejad; J. Ghalamghash

Volume 20, Issue 78 , December 2011, Pages 139-146


  Gol-Gohar iron mine in Sirjan with general tonnage of 1135 milion tons, is one of the most important iron sources in Iran. The main ore minerals in this ore deposit consist of magnetite and subordinate hematite. δ18O of magnetite ranges from 3.8‰ to 4.8‰, while the calculated δ18O ...  Read More

Original Research Paper
Tectonic Provenance of Padeha Formation Sandstones in Samirkooh Section, Central Iran: with Refrence to Influence of Diagenetic Processes on Sandstones Composition

M. Hosseini-Barzi; M. Saeedi

Volume 20, Issue 78 , December 2011, Pages 147-158


  The sandstones of Padeha Formation with 390m thickness in section of Samirkooh in Kerman, Zarand have been studied to illuminate their provenance, tectonic provenance, diagenesis by omitting the effect of diagenetic process on sandstone composition. In this direction,  petrography of 91 thin sections, ...  Read More

Original Research Paper
Geomorphic Signatures of Active Tectonics in the Talaghan Rud, Shah Rud and SefidRud Drainage Basins in Central Alborz, N Iran

Z. Mardani; M. Ghorashi; M. Arian; Kh. Khosrotehrani

Volume 20, Issue 78 , December 2011, Pages 159-166


  Geomorphic indices of active tectonics are useful tools to analyze the influence of active tectonics.These indices have the advantage of being calculate from ArcGIS and remote sensing packages over large area as a reconnaissance tool to identify geomorphic anomalies possibly related to active tectonics.This ...  Read More

Original Research Paper
Introduction to New Concentration-Volume Fractal Method for Separation Zones in Porphyry Deposits

P. Afzal; A. Khakzad; P. Moarefvand; N. Rashid Nezhad Omran; Y. Fadakar Alghalandis

Volume 20, Issue 78 , December 2011, Pages 167-172


  Determination of different zones in porphyry deposits is on of important goals in their exploration because this operation especially determination supergene zone is important for economical study in these deposits. Traditional methods based on alterations and mineralogical studies are not proper in ...  Read More

Original Research Paper
Post-Collisional Shoshonitic, C-type Adakitic and Lamprophyric Plutonism in the Khankandi Pluton, Arasbaran (NW Iran)

M. Aghazadeh; M. H. Emami; H. Moin Vaziri; N. Rashidnezhad Omran; A. Castro

Volume 20, Issue 78 , December 2011, Pages 173-188


  Khankandi pluton is located in northwestren part of Iran, within Garadagh (Arasbaran) - south Armenia block. Main units of the pluton are monzonite and granodiorite associated with minor gabbro and lamprophyric and dacitic dykes. Granodioritic plutonism is followed by gabbro and monzonite. Lamprophyric ...  Read More